STAGED DEPLOYMENT DEVICES AND METHODS FOR TRANSCATHETER HEART VALVE DELIVERY

摘要

A delivery device for a collapsible heart valve includes an operating handle and a catheter assembly. The operating handle includes a frame defining a movement space therein, a carriage assembly moveable in a longitudinal direction within the movement space, and a coupler having locked and unlocked conditions, the coupler being operatively connected to the carriage assembly for movement therewith. The catheter assembly includes a shaft around which a valve-receiving compartment is defined, the shaft being operatively connected to one of the frame or the carriage assembly, and a distal sheath operatively connected to the carriage assembly for movement therewith between a closed condition adapted to maintain the valve in the compartment and an open condition adapted to fully deploy the valve.

主权项

1. A method of delivering a collapsible prosthetic heart valve in a patient, the method comprising:
providing a delivery device having a catheter assembly and an operating handle, the catheter assembly including a compartment adapted to receive the valve in an assembled condition, the operating handle including a frame defining a movement space therein, a carriage assembly moveable in a longitudinal direction within the movement space, and a coupler operatively connected to the carriage assembly for movement therewith; loading the valve into the compartment of the catheter assembly, the compartment and the valve being covered by a distal sheath of the catheter assembly; inserting the catheter assembly into the patient; positioning the valve at a target location within the patient; partially deploying the valve by moving the carriage assembly of the operating handle in a first longitudinal direction along a first portion of the movement space, while the coupler is in a locked condition connected to the frame in a fixed position; and fully deploying the valve by unlocking the coupler from the frame and translating the coupler of the operating handle together with the carriage assembly to continue movement of the carriage assembly in the first longitudinal direction along a second portion of the movement space.